Lattice structure becomes more and more popular in recent years and the inhomogeneity of lattice structure is a difficult point for damage detection especially for lack of information of intact structure.Non-destructive evaluation(NDE)techniques based on vibration can be used for detection of many structures.Mode frequency and mode shape can give information about stiffiness information of structure and on this basis NDE techniques can find the damage which has special characteristic.Moreover we hope the NDE method doesnt need baseline which may be given by the finite element method or an intact structure.